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56-101-01175 Revision P Page | 54
Figure 57
Leak Test Results
f) Record the leak test results.
g) If additional leak test at other altitudes or airspeeds is required, select the
appropriate ATP Leak Test profile, edit the values, and repeat steps 8 and 9 above
for any additional test points.
9. This completes the Combined ATP Leak Test process.
D.
Testing the Aircraft Static System
CAUTION:
OBSERVE ALL SAFETY PRECUATIONS DETAILED IN THE AMM AND/OR
CMM.
Note:
The AMM or CMM procedure should always be recognized as the primary authority
and this manual should be recognized as a secondary aide. As such the primary
objective of this manual is to provide instruction relevant to general Test Set
operation while the AMM or CMM dictates the specific test process, sequences,
and values.
1. Ensure the Test Set is powered ON. Wait for Initialization to be completed, the system
to be safe at Ground,
and the display to indicate “Vented.”
Note:
If required, select Go To Ground and wait for the Test Set to indicate “Unit Safe at
Ground.
”
2. Connect the hoses, both Static (Ps) and Pitot (Pt) to the Test Set ports
– hand-tighten
only.
Note
: The Pitot (Pt) hose is not required to perform a Static (Ps) system test, however
it is highly recommended as a safety precaution to protect the ASI from possible
damage.
3. If not already done, perform a Leak Test on the Test Set and hoses.
Note
: CAP the aircraft end of each hose
– hand-tighten only.
4. Connect the hoses to the aircraft Static (Ps) and Pitot (Pt) ports.
Note
: Using the Pitot (Pt) hose for a Static system test will prevent the possibility of
damaging the ASI “Airspeed Indicator” which can happen if the Static (Ps)
channel is driven to a high altitude while testing and creates a large differential
pressure which could exceed the ASI full scale rating.